For power equipment manufacturers, the most concerning issue when purchasing a lightning impulse voltage generator is: how many types of products can be tested with this equipment? If the product line expands, can the equipment still be used?
The answer is much broader than many manufacturers expected. The UHV series lightning impulse voltage generator testing device of Wuhan UHV Power Technology Co., Ltd. can cover the impulse voltage testing needs of dozens of high-voltage power products, including transformers, switchgear, power cables, insulators, etc., with just one set of equipment.
Covering mainstream high-voltage electrical appliances, one set of equipment connects the entire product line
In the field of power equipment manufacturing, there are numerous types of products, each with its own requirements for assessing the impact insulation level. If each type of product is equipped with a dedicated testing equipment, not only will the procurement cost be high, but the pressure of factory space and personnel training will also increase exponentially.
The application scope of Wuhan UHV series lightning impulse voltage generator covers the vast majority of high-voltage power equipment. In terms of transformer products, the equipment can be used for various impulse voltage tests of standard lightning impulse, lightning cutoff wave, operational impulse, and non-standard impulse wave required by users for power transformers, reactors, transformers, and other high-voltage electrical appliances. In terms of switchgear, taking the UHV-600kV/45kJ model as an example, this equipment is suitable for lightning full wave, lightning cut wave, and lightning operation wave tests of power products such as 3.3-66kV and below high-voltage switchgear, circuit breakers, load switches, etc., to assess the impact insulation level of the products.
In addition, the equipment can also be used for impulse voltage testing of high-voltage thyristor valves SVC (HVDC), power cables, various high-voltage insulators, bushings, and other test samples. From transformers to switchgear, from cables to insulators, one set of equipment can cover all the impact testing requirements of mainstream high-voltage electrical products.
Multiple waveforms, one set of equipment meets different standards
The requirements for impulse voltage waveform vary among different products and standards. Some require lightning full wave (1.2/50 μ s), some require lightning truncation (truncation time 2-6 μ s), and some require operational wave (250/2500 μ s). If the device can only output one waveform, its applicability will be greatly reduced.
The UHV series equipment can output standard impulse waveforms such as lightning full wave, truncated wave, and operational wave. Taking the UHV-600kV/45kJ model as an example, this equipment can generate standard lightning impulse voltage full wave when the load capacitance is below 300-4000PF, with waveform parameters of 1.2 ± 30% μ s/50 ± 20% μ s, amplitude ± 3%, and peak oscillation not exceeding 5% of the amplitude; The use of a truncation device can generate lightning waves with a truncation time of 2-6 μ s, and the dispersion of the waves is less than 100ns. At the same time, it can output standard lightning impulse operating voltage waves with a waveform of 250 ± 20% μ s/2500 ± 60% μ s.
More importantly, the equipment not only supports standard waveforms, but also non-standard shock wave waveforms proposed by users. One set of equipment can generate multiple test waveforms. This means that regardless of whether manufacturers need to comply with national standards, IEC standards, or specific industry standards, a set of UHV series equipment can meet them.
Modular design, a set of equipment grows together with the business
The product lines of power equipment manufacturers are often in a state of dynamic development. Today we produce 10kV switchgear, but tomorrow we may need to expand to 35kV or even 110kV transformers. If the equipment does not have scalability, enterprises will face the dilemma of duplicate procurement.
The UHV series equipment adopts a 4-stage tower modular design, supporting single-stage low-voltage testing and multi-stage parallel expansion. Taking the UHV-600kV/45kJ model as an example, its bracket, DC charging unit, etc. have scalability and can be extended to the 1000kV level. Modular design not only reduces the size of equipment by 40% compared to traditional equipment, making it easier to transport and deploy on site, but also enables enterprises to continuously realize the value of their investments today by following product upgrades.
Widely adaptable to the needs of multiple industries, applicable from factories to laboratories
In addition to power equipment manufacturers, UHV series equipment is also widely used in quality inspection, appraisal, measurement and supervision institutions, railway communication, aerospace and aviation vehicles, scientific research units, colleges and universities, as well as meteorological departments for lightning protection and lightning testing. This cross industry wide applicability further proves the comprehensive strength of the equipment in waveform output, voltage level, load capacity, and other aspects.
For power equipment manufacturers, purchasing lightning impulse voltage generators is essentially purchasing a testing platform that can cover all current product lines, adapt to multiple testing standards, and continuously upgrade with business development. The Wuhan UHV series equipment covers dozens of high-voltage products such as transformers, switchgear, cables, insulators, etc. with a set of equipment, and meets different standard requirements with multiple waveform outputs. With modular design, it protects long-term investment of enterprises and provides a true "universal testing platform" for power equipment manufacturers.